WO1998030425A1 - Hydraulikaggregat - Google Patents
Hydraulikaggregat Download PDFInfo
- Publication number
- WO1998030425A1 WO1998030425A1 PCT/EP1997/007078 EP9707078W WO9830425A1 WO 1998030425 A1 WO1998030425 A1 WO 1998030425A1 EP 9707078 W EP9707078 W EP 9707078W WO 9830425 A1 WO9830425 A1 WO 9830425A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- brake
- pressure
- hydraulic unit
- suction path
- filling
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
Definitions
- the invention relates to a hydraulic unit according to the preamble of claim 1 and a method for pre-filling a hydraulic unit with brake fluid according to the preamble of the independent claims.
- Hydraulic units of the aforementioned type are either filled or made available to the vehicle manufacturer without brake fluid. Since in motor vehicle brake systems that work on the return principle, the wheel outlet valves lead into so-called secondary circuits, which virtually correspond to the pump suction path with the low-pressure accumulator connected to it, special venting and filling measures are required in order to reliably operate the electrically and hydraulically switchable valves in the area of the secondary circuit Protect air pockets and fill with brake fluid.
- the filling process of the entire brake system relates exclusively to the primary circuit, i.e. limited to the hydraulic section between the brake pressure sensor and the pressure medium connection opened in the direction of the wheel brake.
- the brake system manufacturer often provides the vehicle manufacturer with the essential functional components that are combined in a hydraulic unit.
- the object of the invention is now to prepare a hydraulic unit of the type specified in such a way that with the simplest possible design and functional effort, the simplest possible pre-filling of the hydraulic unit is created.
- Fig. 1 shows a basic representation of the circuit technical construction within a hydraulic unit for a motor vehicle brake system that works on the return flow principle. Only a brake circuit of a circuit arrangement normally designed as a dual-circuit system is shown.
- a first connection 1 on the hydraulic unit 2 leads to a brake pressure transmitter 3, the first connection 1 within the hydraulic unit 2 leading to further, second and third connections 4, 5 via a plurality of pressure control valves of each brake circuit, which are at least partially shown in the hydraulic unit 2, connected to a pair of wheel brakes.
- Each wheel brake is assigned 2 inlet and outlet valves 6, 7 within the hydraulic unit, a pump suction path 8 being connected downstream to the outlet valves 7 of each brake circuit, which is connected via a pressure control valve 9 on the one hand to a pump 10 and on the other hand by means of a changeover valve 11 closed in the basic position is separated from the brake pressure sensor 3.
- the pump suction path 8 is thus divided into two so-called dead spaces A, B as a result of the pressure retention valve 9, of which the dead space A extending between the pressure retention valve 9 and each to the outlet valve 7 around the dead space of the low-pressure accumulator 12 is enlarged.
- each brake circuit has a pre-filling point 13 which, after the secondary circuit has been evacuated, enables the secondary circuit to be pre-filled, so that after the hydraulic unit has subsequently been completed, the three connections 1 , 4,5 on the wheel brakes and on the brake pressure transmitter 3, only the need to fill the so-called primary circuit is required by the vehicle manufacturer, so that the exhaust valves 7 no longer have to be switched during the filling process.
- the inlet valves 6 as well as the solenoid valve 14 designed as an ASR isolating valve are open when de-energized.
- the valve circuit shown for a brake circuit thus corresponds with regard to the use of the electromagnetic valve 14 as well as in connection with the arrangement of the electrically actuable changeover valve 11 of a brake system which is not only suitable for anti-lock control, but also for operation with traction control as well as driving dynamics control.
- the brake system shown in the illustration thus corresponds in all essential elements of the brake system according to DE 44 46 525 AI.
- Vacuum preferably high vacuum, is generated at the pre-filling point 13.
- the switch valve 11 which normally separates the pump suction path 8 from the brake pressure transmitter 3 and is closed in the basic position, is switched electromagnetically to the open position.
- Both dead space areas A, B are either quickly and thoroughly evacuated either via one of the wheel connections 4, 5 or via the connection 1 to the brake pressure transmitter 3, since a vacuum connection is effectively on both sides of the pressure control valve 9.
- the changeover valve 11 is reset to its closed basic position.
- the vacuum at the pre-filling point 13 of the secondary circuit is acted upon and filled with the pressure of a brake fluid to be introduced into the hydraulic unit, the pressure of the Brake fluid is dimensioned so high that it can open the pressure control valve 9 opening in the direction of the changeover valve 11, but cannot open the changeover valve 11.
- the vacuum at the pre-filling point 13 is replaced by an absolute pressure of the brake fluid of approximately 1.5 bar.
- the dead space A is filled with brake fluid until the pressure at the pressure retention valve 9 exceeds the opening pressure of approximately 0.2 to 0.9 bar, so that the brake fluid now also flows through the open pressure retention valve 9 until the filling pressure is reached filled from 1.5 bar. Since the filling pressure is less than the hydraulic opening pressure of the changeover valve 11, the pressure clamped between the pressure retention valve 9 and the changeover valve 11 is maintained at the value of approximately 1.5 bar, while the dead space A between the pressure retention valve 9 and the outlet valves 7 continues Removing a pre-filling device and closing the pre-filling point 13 at atmospheric pressure remains pre-filled with brake fluid.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Regulating Braking Force (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53049998A JP4354534B2 (ja) | 1997-01-09 | 1997-12-17 | 液圧ユニット |
US09/341,281 US6199958B1 (en) | 1997-01-09 | 1997-12-17 | Hydraulic unit |
EP97953839A EP0950004B1 (de) | 1997-01-09 | 1997-12-17 | Hydraulikaggregat |
DE59703522T DE59703522D1 (de) | 1997-01-09 | 1997-12-17 | Hydraulikaggregat |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19700410.5 | 1997-01-09 | ||
DE19700410A DE19700410A1 (de) | 1997-01-09 | 1997-01-09 | Hydraulikaggregat |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998030425A1 true WO1998030425A1 (de) | 1998-07-16 |
Family
ID=7816975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/007078 WO1998030425A1 (de) | 1997-01-09 | 1997-12-17 | Hydraulikaggregat |
Country Status (5)
Country | Link |
---|---|
US (1) | US6199958B1 (de) |
EP (1) | EP0950004B1 (de) |
JP (2) | JP4354534B2 (de) |
DE (2) | DE19700410A1 (de) |
WO (1) | WO1998030425A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998049041A1 (de) * | 1997-04-26 | 1998-11-05 | Continental Teves Ag & Co. Ohg | Verfahren zur vorbefüllung des sekundärkreises von hydraulikaggregaten elektronischer bremsensysteme |
EP0968896A2 (de) * | 1998-07-01 | 2000-01-05 | Nissin Kogyo Co., Ltd. | Regelvorrichtung für den hydraulischen Bremsdruck von Kraftfahrzeugen |
US9102310B2 (en) | 2010-10-21 | 2015-08-11 | Continental Teves Ag & Co. Ohg | Hydraulic unit |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10138125A1 (de) * | 2001-08-03 | 2003-02-13 | Bosch Gmbh Robert | Verfahren zur Entgasung einer hydraulischen Fahrzeugbremsanlage |
JP4109485B2 (ja) * | 2002-04-22 | 2008-07-02 | 株式会社日立製作所 | ブレーキ制御装置 |
DE10308737A1 (de) * | 2002-08-13 | 2004-02-26 | Continental Teves Ag & Co. Ohg | Verfahren zur Überprüfung der Entlüftungsgüte eines elektrohydraulischen Bremssystems |
EP1536997B1 (de) | 2002-08-14 | 2007-01-17 | Continental Teves AG & Co. oHG | Verfahren zum wechsel des druckmittels eines elektrohydraulischen bremssystems |
JP2005535518A (ja) * | 2002-08-14 | 2005-11-24 | コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト | 電気油圧式ブレーキシステムのエア抜きおよび再充填方法 |
DE10316750A1 (de) * | 2003-04-10 | 2004-10-28 | Continental Teves Ag & Co. Ohg | Hydraulische Fahrzeugbremsanlage |
DE102005008851A1 (de) * | 2004-04-29 | 2005-12-01 | Continental Teves Ag & Co. Ohg | Verfahren zum Entlüften einer elektronischen Fahrzeugbremsanlage |
JP4712833B2 (ja) * | 2008-06-25 | 2011-06-29 | 日立オートモティブシステムズ株式会社 | ブレーキ制御装置およびその制御方法 |
DE102009010050A1 (de) | 2009-02-21 | 2010-08-26 | Continental Teves Ag & Co. Ohg | Hydraulikaggregat |
DE102010030321A1 (de) | 2010-06-22 | 2011-12-22 | Continental Teves Ag & Co. Ohg | Hydraulische Fahrzeugbremsanlage |
DE102010040380A1 (de) | 2010-09-08 | 2012-03-08 | Continental Teves Ag & Co. Ohg | Hydraulikaggregat |
US20120199214A1 (en) * | 2011-02-09 | 2012-08-09 | GM Global Technology Operations LLC | Brake modulator and method of processing brake modulator during vehicle assembly |
DE102013201577A1 (de) * | 2012-12-12 | 2014-06-12 | Robert Bosch Gmbh | Fahrzeugbremsanlage mit mindestens einem hydraulischen Bremskreis |
DE102014200852A1 (de) | 2014-01-17 | 2015-07-23 | Continental Teves Ag & Co. Ohg | Hydraulische Fahrzeugbremsanlage |
DE102015209966B4 (de) * | 2015-05-29 | 2022-02-24 | Volkswagen Aktiengesellschaft | Verfahren zum Befüllen eines Hydrauliksystems |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0323889A2 (de) * | 1988-01-08 | 1989-07-12 | LUCAS INDUSTRIES public limited company | Entlüftung eines Antischleuderbremssystems |
EP0482367A1 (de) * | 1990-10-26 | 1992-04-29 | Robert Bosch Gmbh | Hydraulische Bremsanlage, insbesondere für Kraftfahrzeuge |
US5299858A (en) * | 1991-04-19 | 1994-04-05 | Alfred Teves Gmbh | Brake system with a device for controlling both the brake slip and the traction slip |
JPH07165046A (ja) * | 1993-12-10 | 1995-06-27 | Aisin Seiki Co Ltd | 液圧制御装置 |
US5505529A (en) * | 1993-10-30 | 1996-04-09 | Robert Bosch Gmbh | Hydraulic brake system with pressure-closed, gravity-opened check valves |
DE4446525A1 (de) | 1994-12-24 | 1996-06-27 | Teves Gmbh Alfred | Hydraulische Kraftfahrzeugbremsanlage |
EP0543187B1 (de) * | 1991-11-19 | 1996-09-11 | Sumitomo Electric Industries, Limited | Methode zum Befüllen einer blockiergeschützten Bremsanlage unter Vakuum |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5605384A (en) * | 1996-05-06 | 1997-02-25 | General Motors Corporation | Access valve evacuation and fill of inaccessible cavities |
US5944068A (en) * | 1997-02-13 | 1999-08-31 | Kelsey-Hayes Company | Apparatus and method for prefilling secondary hydraulic circuits of a vehicular braking system |
-
1997
- 1997-01-09 DE DE19700410A patent/DE19700410A1/de not_active Withdrawn
- 1997-12-17 DE DE59703522T patent/DE59703522D1/de not_active Expired - Lifetime
- 1997-12-17 JP JP53049998A patent/JP4354534B2/ja not_active Expired - Lifetime
- 1997-12-17 WO PCT/EP1997/007078 patent/WO1998030425A1/de active IP Right Grant
- 1997-12-17 US US09/341,281 patent/US6199958B1/en not_active Expired - Lifetime
- 1997-12-17 EP EP97953839A patent/EP0950004B1/de not_active Expired - Lifetime
-
2007
- 2007-11-26 JP JP2007304366A patent/JP4278695B2/ja not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0323889A2 (de) * | 1988-01-08 | 1989-07-12 | LUCAS INDUSTRIES public limited company | Entlüftung eines Antischleuderbremssystems |
EP0482367A1 (de) * | 1990-10-26 | 1992-04-29 | Robert Bosch Gmbh | Hydraulische Bremsanlage, insbesondere für Kraftfahrzeuge |
US5299858A (en) * | 1991-04-19 | 1994-04-05 | Alfred Teves Gmbh | Brake system with a device for controlling both the brake slip and the traction slip |
EP0543187B1 (de) * | 1991-11-19 | 1996-09-11 | Sumitomo Electric Industries, Limited | Methode zum Befüllen einer blockiergeschützten Bremsanlage unter Vakuum |
US5505529A (en) * | 1993-10-30 | 1996-04-09 | Robert Bosch Gmbh | Hydraulic brake system with pressure-closed, gravity-opened check valves |
JPH07165046A (ja) * | 1993-12-10 | 1995-06-27 | Aisin Seiki Co Ltd | 液圧制御装置 |
DE4446525A1 (de) | 1994-12-24 | 1996-06-27 | Teves Gmbh Alfred | Hydraulische Kraftfahrzeugbremsanlage |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 095, no. 009 31 October 1995 (1995-10-31) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998049041A1 (de) * | 1997-04-26 | 1998-11-05 | Continental Teves Ag & Co. Ohg | Verfahren zur vorbefüllung des sekundärkreises von hydraulikaggregaten elektronischer bremsensysteme |
EP0968896A2 (de) * | 1998-07-01 | 2000-01-05 | Nissin Kogyo Co., Ltd. | Regelvorrichtung für den hydraulischen Bremsdruck von Kraftfahrzeugen |
EP0968896A3 (de) * | 1998-07-01 | 2003-01-15 | Nissin Kogyo Co., Ltd. | Regelvorrichtung für den hydraulischen Bremsdruck von Kraftfahrzeugen |
US9102310B2 (en) | 2010-10-21 | 2015-08-11 | Continental Teves Ag & Co. Ohg | Hydraulic unit |
Also Published As
Publication number | Publication date |
---|---|
JP2001507653A (ja) | 2001-06-12 |
US6199958B1 (en) | 2001-03-13 |
JP4278695B2 (ja) | 2009-06-17 |
JP2008062935A (ja) | 2008-03-21 |
JP4354534B2 (ja) | 2009-10-28 |
EP0950004A1 (de) | 1999-10-20 |
EP0950004B1 (de) | 2001-05-09 |
DE59703522D1 (de) | 2001-06-13 |
DE19700410A1 (de) | 1998-07-16 |
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